Alpine DVA-9861 owner manual Over Adjustment, Calculating the Time Correction, 37-EN

Page 39
8 Adjust L.P.F. by performing steps 6 and 7.
9 Adjust the level (LEVEL) by turning the Rotary encoder, then press MODE.
Press the MODE to return to step 6.
10 To adjust other channels, repeat steps 5 to 9.
11 When the setting is complete, press and hold MUTE for at least 2 seconds.
The unit returns to the normal mode.
• When the speaker is set to the “OFF” mode, the X-OVER for that speaker cannot be set. Refer to “Setting the Speakers” (page 36).
• Check the playback frequencies of the connected speakers before adjusting.
• In order to protect the speakers, there is no OFF setting for the subwoofer low pass filter (the slope remains the same).
• The H.P.F. filter cannot be set to OFF (slope OFF) if Tweeter is selected for FRONT1. Or, if subwoofer is set to STEREO, CENTER adjustment is affected by the subwoofer setting.
• When the setting is complete, it is recommended to store the setting contents. For storing, refer to page 43.
Adjust the slope of H.P.F. (HP SLOPE) by turning the Rotary encoder, and press MODE.
7
Adjust the cut-off frequency of H.P.F. (HP FREQ) by turning the Rotary encoder, then press MODE. The adjustable frequency range differs depending on the channels (speakers).
6
• The speakers display differs, depending on the connected speakers.

X-OVER Adjustment

1Check that Defeat mode is off (page 21).

2Press and hold MUTE for at least 2 seconds.

The audio processor control mode is activated.

3Select the X-OVER mode by pressing MUTE repeatedly.

4Select L+R or L/R by pressing and holding BAND for at least 2 seconds.

L+R: Sets the same adjustment values for the left and right channels.

L/R: Different adjustment values can be set for the left and right channels.

5Select the desired channel by pressing or , then press MODE.

When L+R is selected :

FRONT 1 FRONT 2 REAR CENTER SUBWOOFER FRONT 1

When L/R is selected :

FRONT 1L FRONT 1R FRONT 2L FRONT 2R

REAR L REAR R CENTER SUBWOOFER FRONT 1L

Performing Time Correction Manually (TCR)/ Phase Switching

Because of the particular conditions inside the vehicle, there can be major differences in the distances between the various speakers and the listening position. It is possible to calculate the optimum correction values and eliminate the time error at the listening position yourself using this function.

Calculating the Time Correction

1Sit in the listening position (the driver’s seat, for example) and measure the distance (in meters) between your head and the various speakers.

2Calculate the difference in distance between the farthest speaker and the other speakers.

L = (distance of farthest speaker)

–(distance of other speakers)

3Divide the distances calculated for the different speakers by the speed of sound (343 m/s temperature 20°C).

This value is the time correction value for the various speakers.

Concrete examples

Calculating the time correction value for the front left speaker on the diagram below.

Conditions:

Distance between farthest speaker and listening position: 2.25 m (88-3/4")

Distance between front left speaker and listening position:

0.5m (20")

Calculation:

L = 2.25 m (88-3/4") – 0.5 m (20")= 1.75 m (68-3/4") Compensation time = 1.75 ÷343 x 1000 = 5.1 (ms)

37-EN

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Contents DVA-9861 CHM-S630 CHA-S634 CHA-1214 Alpine CD Changers Give You MoreContents Operating Instructions Setup IPod Optional PrecautionsOperating Instructions Never Attempt the Following Audio + Video 12 cm Discs playable on this unitOn handling compact discs CD/CD-R/CD-RW About the alphanumeric display of this unit Turning Power On and OffPress SOURCE/POWER to turn on the unit Getting StartedInitial System Start-Up Setting TimeAdjusting Volume Lowering Volume QuicklyRadio Manual Storing of Station PresetsAutomatic Memory of Station Presets Tuning to Preset Stations11-EN Switching the HD Radio signalFrequency Search Function PlaybackRepeat Play X. Random Play12-EN About MP3/WMA Remote Control OperationSearching from CD Text File/Folder Name Search Concerning MP3/WMA14-EN TerminologyDVD/Video CD Playing a Disc15-EN Stopping Playback Searching by ProgramSearching by Playlist Stopping Playback PRE-STOPSearching by Title Number Playing Still Frames pausingSelecting Program/Playlist Slow Motion Playback18-EN Searching by Group NumberSearching by Program or Playlist Number Repeat Playback19-EN Switching the Audio TracksSwitching the Angle DVD-VR/Video CDs with multiplex audio20-EN Displaying the Disc StatusSound Setting Setting the Bass ControlRear/Defeat Setting the Treble Level Setting the Treble ControlSetting the BBE Mode Setting the Treble Center FrequencyOther Functions Displaying the Text23-EN Sound Customizing Blackout Mode On and OffSetting the Wallpaper Displaying TimeVisual Customizing External Device25-EN DVD Setup DVD Setup Operation26-EN Setting the Country Code When the setting is complete, press SetupSetting the language Setting the TV ScreenSetting the Rating Level Parental Lock Setting item Parental Further setting item Parental Level28-EN 29-EN Audio SetupAudio Setup Operation Press or to change the setting, then press ENT30-EN Setting the Downmix ModeCustom Setup Custom Setup Operation31-EN 32-EN SAT Radio Receiver OptionalReceiving Channels with the SAT Radio Receiver Optional Checking the SAT Radio ID NumberChannel/Category Search Function Setting the Tuning MethodStoring Channel Presets Receiving Stored ChannelsChanging the Display Setting the Auxiliary Data Field DisplayQuick Search Function Receiving Weather or Traffic information from SAT RadioAdjustment Procedure for Dolby Surround External Audio Processor Optional35-EN Select ON/OFF of MX by pressing or Setting the SpeakersSet MX Mode of the External Audio Processor 36-EN37-EN Over AdjustmentSelect the desired channel by pressing or , then press Mode Calculating the Time CorrectionInputting the Time Correction Graphic Equalizer AdjustmentsSwitching the Phase Check that Defeat mode is offParametric Equalizer Adjustments 39-ENPress Band to select the band 40-EN Setting Bass CompressorSetting Bass Focus Speaker SetupMixing bass sound to the rear channel Setting of Dolby DigitalAdjusting the speaker levels Adjusting the acoustic imageAdjust the level Level by turning the Rotary encoder Adjusting the DVD LevelUsing the Pro Logic II Mode Achieving powerful high volume soundConfirming the current Preset No./EQ mode Linear PCM SettingStoring Settings in the Memory Recalling the Preset Memory44-EN Remote Control OperationSearching by artist name IPod OptionalSearching for a desired Song Searching by PlaylistSearching by song name Direct Search FunctionSelect Playlist/Artist/Album Searching by album nameQuick Search Random Play Shuffle M.I.X47-EN Multi-Changer Selection Optional Changer OptionalControlling CD Changer Optional Playing MP3 Files with the CD Changer OptionalRemote Control Controls on Remote Control49-EN 50-EN When Using the Remote Control Battery Replacement51-EN Dolby Digital InformationAbout DVDs Terminology53-EN Dolby Pro LogicLinear PCM audio Lpcm Rating levels parental lockList of Language Codes 54-ENFor details, see 55-EN List of Country Codes56-EN CD/MP3/WMA/DVD/Video CD Case of DifficultyBasic RadioAudio Indication for CD Player58-EN Indication for DVD/Video CD Player Indication for Changer59-EN Indication for iPod Mode Indication for SAT Receiver Mode60-EN 61-EN Specifications62-EN Installation and Connections63-EN InstallationAccessory List Install the Detachable Front Panel64-EN RemovalPull the unit out, keeping it unlocked as you do so 65-EN Connections66-EN Please observe the following when using Fiber Optic Cable System Example67-EN Page Page
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